Fix warnings

Author: devlights

TryCSharp.Samples/Linq/LinqSamples12.cs

@@ -67,7 +67,7 @@ public void Execute()
         private class Person
         {
             public int Id { get; set; }
-            public string Name { get; set; }
+            public string? Name { get; set; }
         }
     }
 }

TryCSharp.Samples/Linq/LinqSamples13.cs

@@ -68,7 +68,7 @@ public void Execute()
         private class Person
         {
             public int Id { get; set; }
-            public string Name { get; set; }
+            public string? Name { get; set; }
         }
     }
 }

TryCSharp.Samples/Linq/LinqSamples14.cs

@@ -84,7 +84,7 @@ public void Execute()
         private class Person
         {
             public int Id { get; set; }
-            public string Name { get; set; }
+            public string? Name { get; set; }
 
             public override string ToString()
             {

TryCSharp.Samples/Linq/LinqSamples15.cs

@@ -84,8 +84,8 @@ public void Execute()
         private class Person
         {
             public int Id { get; set; }
-            public string Name { get; set; }
-            public string Team { get; set; }
+            public string? Name { get; set; }
+            public string? Team { get; set; }
         }
     }
 }

TryCSharp.Samples/Linq/LinqSamples16.cs

@@ -83,12 +83,12 @@ public void Execute()
         private class Person
         {
             public int Id { get; set; }
-            public string Name { get; set; }
+            public string? Name { get; set; }
         }
 
         private class Customer : Person
         {
-            public IEnumerable<Order> Orders { get; set; }
+            public IEnumerable<Order>? Orders { get; set; }
         }
 
         private class Order

TryCSharp.Samples/Linq/LinqSamples17.cs

@@ -100,12 +100,12 @@ public void Execute()
         private class Person
         {
             public int Id { get; set; }
-            public string Name { get; set; }
+            public string? Name { get; set; }
         }
 
         private class Customer : Person
         {
-            public IEnumerable<Order> Orders { get; set; }
+            public IEnumerable<Order>? Orders { get; set; }
         }
 
         private class Order

TryCSharp.Samples/Linq/LinqSamples19.cs

@@ -43,7 +43,7 @@ public void Execute()
         private class Person
         {
             public int Id { get; set; }
-            public string Name { get; set; }
+            public string? Name { get; set; }
         }
     }
 }

TryCSharp.Samples/Linq/LinqSamples20.cs

@@ -43,7 +43,7 @@ public void Execute()
         private class Person
         {
             public int Id { get; set; }
-            public string Name { get; set; }
+            public string? Name { get; set; }
         }
     }
 }

TryCSharp.Samples/Linq/LinqSamples21.cs

@@ -87,8 +87,8 @@ public void Execute()
 
         private class Team
         {
-            public string Name { get; set; }
-            public IEnumerable<string> Members { get; set; }
+            public string? Name { get; set; }
+            public IEnumerable<string>? Members { get; set; }
         }
     }
 }